Approximately 480 MB free space on the hard drive CD-ROM or DVD-ROM drive (for installation) Microsoft® Internet Explorer® 8 or higher Microsoft Windows® Installer 3.0 or higher Microsoft .NET Framework 4 or higher Webcam Protection technology only runs on PCs. The feature is available for a wide range of compatible web-cameras. For the full list of compatible devices, visit www.kaspersky.com Microsoft Windows 101 (32-bit or 64-bit2) Microsoft Windows 8.1 / Pro / Enterprise / 8.1 update (32-bit or 64-bit2) Microsoft Windows 8 / Pro / Enterprise (32-bit or 64-bit2) Microsoft Windows 7 Starter / Home Basic / Home Premium / Professional / Ultimate SP1 or higher (32-bit or 64-bit2) Microsoft Windows Vista® Home Basic / Home Premium / Business / Enterprise / Ultimate SP1 or higher (32-bit or 64-bit2) Processor: 1 GHz or higher, Memory (RAM): 1 GB (32-bit) or 2 GB (64-bit) Microsoft Windows XP Home / Professional (32-bit) SP3 or higher / Professional (64-bit2) SP2 or higher Processor: 800 MHz or higher, Memory (RAM): 512 MB1At this time, the functionality of the following components is partially limited when using Windows 10: System Watcher, System memory scan, Self-Defense, Application Control, Safe Money2. Webcam Protection is not available with Windows 10. Product installation and operation is not supported when Device Guard is turned on. Product is not intended to operate on Windows 10 Mobile editions. For full details on the limitations, please visit http://support.kaspersky.com/12194.2Some product features might work on 32-bit operating systems only.